Hose clamp



Dec. 11 1923. 1,477,071

B. MORGAN HOSE CLAMP Filed Aug. 8, 1922 IN VEN TOR BY l Ms A TTORNE Y5Patented Dec. 11, 1923.

UNITED STATES BERNARD MORGAN, OF KEENE, NEW HAMPSHIRE.

HOSE CLAMP.

Application filed August 8, 1922. Serial No. 580,390.

To all whom it may concern:

Be it known that I, BERNARD MORGAN, a subject of Great Britain, residingat Keene, in the county of Cheshire, State of New Hampshire, haveinvented certain new and useful Improvements in Hose Clamps; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention is directed to the construction of an improved form ofclamp for effecting the connection between two tubular members, such forinstance, as a tubular hose on a metallic part and the end of a lengthof rubber hose. A clamp constructed in accordance with the invention isof especial benefit in effecting the connection between the ends of apiece of rubber hose and the projecting tubular members of the waterjacket of an internal combustion -engine and the radiator of anautomobile. The ends of the rubber hose may be forced over the tubularmembers and the clamps tightened up upon the hose to fasten it securelyto the tubular members.

The clamp comprises a band of sheet metal bent to circular form, with abolt and nut passing through a perforation in one end and having theother end turned up and slotted and havin a rigid brace member attachedto it. Wl6ll this clamp is applied to a hose connection the bolt isropped into the slot and the nut turned up to draw the ends of the sheetmetal band together to tighten the clamp. While the clamp is beingtightened the presence of the brace member prevents the bending of theturned up end of the metal band by converting the tangential reaction ofthe nut against the turne up end into radial pressure against the hose.The provision of this brace member allows of considerable pressure beingexerted b the nut and bolt in drawing the ends of t e metal bandtogether without pinching the hose in the space between the ends of themetal band. Preferably, however, a guard-piece is placed under the braceto brid e t 1e gap bet-ween the ends of the clamping and. as it can bemade somewhat longer than the width of the brace to better keep the hosesmooth.

In constructing the binding band of this improved hose c amp :1 strip ofsheet metal has a loop formed in it in the vicinity of one of its ends,the sides of this 100 being pressed together to form an upturne ear ofdouble thickness of metal and preferably leaving an extension on theouter side of this ear in the plane of the clamping portion of the band,which extension forms the guardplece to bridge the gap between theupturned ends of the metal clampin band when it is in place. The bracemem er is constructed in any suitable manner, and slipped over theaforementioned upturned ear of the clampin band which ear has beenpreviously slotte to receive the clamping bolt. The outer ends of theear are then turned down over the upper edge of the brace member whichis thereby permanently and securely fastened to the clamping band, thefeet of the brace member resting upon the guardpiece instead of comingdirectly in contact with the hose. The compressed loop ear bent aroundthe face of the brace member affords an extremely rigid construction.

One of the primary advantages of this form of clamp is the abilit todraw the ends of the metal band together with great pressure withoutpinching or otherwise damaging the hose, the pressure being applied moreevenly throughout the circumference of the clamp than is ordinarilyobtained with clamps in every day use. other advantage of thisconstruction is found in the fact that it is quickly attached ordetached and is adjustable to various sizes of hose. A clamp made inaccordance with this invention is rugged and will withstand considerablemisuse, but at the same time can be manufactured at a reasonable cost.

The features of construction of the clamp outlined above may be betterunderstood'by" referring to the following detailed description taken inconjunction with the accompanying drawings which illustrate thepreferred embodiment of the invention. In these drawings,

Fig. 1 is a view part1 in cross section and partl in elevation o theclamp assembled in place;

Fig. 2. is a view in elevation of the clamp shown in Fig. 1 looking fromthe left.

Fig. 8 is a view in elevation of the clamp shown in Fig. 1 looking fromthe right.

Fig. 4 is a view of the clamp by itself with all its parts assembled.

Fig. 5 is a plan view of the same clamp as shown in F 1g. 4-.

Figs. 6 and 7 are perspective views of the brace member and the clampingband, respectively, illustrating their construction and the manner inwhich they are assembled. Referring first to Figs. 4 to 7, inclusive,the clam consists of four parts, the clamping ban 10 of sheet metal, thebrace men ber 11, the bolt 12 and the nut 13 which is preferabl a thumbor wing nut in order that the amp may be apphe by hand. The brace member11 1s a box-like construction and is so made that it is perfectly rigidunder the forces which are applied it. The clam ing band is made of astrip of any suitable sheet metal such as steel or brass, and. isprovided at one end with a series of rforations 14, through any one ofwhich,

epending upon the size of the hose, the bolt 12 may e inserted. In thevicinityof the opposite end of the sheet metal band 10 a compresse loopforming an ear 15 of double thickness of metal is formed leaving the end16 extending beyond the ear 15 in the lane of the band 10. Thisextension 16 orms a guard-piece to fill the gap between the open ends ofthe clam when it IS bent in place, and it may be slig tly curved so asto conform to the surface of the hose. The car 15 is slotted as shown at17.

The brace member 11 is a rigid box-like structure of metal, such assteel or brass,

, and is formed withthe sloted face 18 adapt this clamp construe ed tocooperate with the car 15 of the metal band. It is also provided withfeet 19 which are connected to the face 18 by means of the roughlytriangular sides 20 and which are adapted to-rest upon the guard-piece16 to maintain the angular position of the car 15 with respect to theguard-piece 16.

M To assemble the members 10 and 11, the car 15 is inserted throu h' theslot 21 provided in member 11 for t is purpose and the outer ends of thecar 15 are then bent over the upper ed of face 18 as best shown in Fig.4 there y permanently and securely fastening the bracemember 11 to themetal band 10. The rigidity and ruggedness of n is quite evideigifrom V"lg-of the brace Member 11, the feet of which tie together the sides 20and thus brace them against lateral displacement. and from the fact thatthrough the face of the clamp where the pressure of the: clamlpiiing nut13 is applied there, are

live thic esses of metal. Fo'ur of these thicknesses are so lied by thecompressed 100 car of the bin in or clampin band 10.

ferring now to igs. 1, 2 an 3,.22 indicates a metal projection or pipeto which it is desired to fasten the hose 23. The completed clam asshown in Fig. 4 is therefore applied to t e surface of the hose by layinthe guard-piece 16 upon the hose and bemE ing the metal band 10 aroundthe same to ascertain the r0 1' hole 14 into which the bolt 12 shou dplaced. After this is found the outer end'of the band 10 is bent atright angles around the elongated head of the bolt 12 to form a secondupturned car 24. The extra length of band 10 may then be cut off. Thebolt being inserted through the car 14 in the ear 24 may now be droppedinto the slot 17 of ear 15 and the nut 13 tightened to draw together theears'15 and 23 so as to clamp the hose securely to the metal projection22. During this clamping process the brace member 11, whose feet bearupon the surface of the hose through the means of the guardiece 16,maintains the desired angular position between the ear I 15 and theguard-piece 16 and efl'ectuall prevents the bending of ,the .ear 15 whicwould otherwise occur. The outside end of the clamping band 10 rides upon the top of the guard-piece 16 and the feet 19 of the ,brace member 11whereby the clam ing force exerted by the elongated heado the bolt 12 isapplied in substantially a tan ntial direction pulling the clamplng ban10 firmly aroun the hose and evenly distributing the clampi pressureover the whole surface of the l rfiimpin member 11 not only sti ens thecar 15 and provides a rigid structure against which the clamping nut mapress, but also holds down the hose in t e space between the ears 15 and24 bg means of its feet 19 and guardiece 16. y the use of this clamp,thereore, the nut 18 may be tightened up without fear of straining theclamp so as to render its clamping action imperfect and.

1. Ahose clamp comprising the combine tion of a sheet metal strip bentto circular form, a bolt assing through a perforation in one'end o thestrip and through a brace member secured to the opposite end of the striby means of a com ressed loop formed in e strip and inserte through thebrace member and bent around a portion thereof, said brace member beingso positioned as to convert a portion of the tangential clampin force ofthe bolt into radial pressure exerted against the surface of the hosethrough the guard piece. r

2. A hose clamp comprising a flexible clamping band, a brace member" anda clamping bolt, thebrace member bein atloop near one end of said band,compressband. The brace ing the sides of this loop together to form itinto an ear, inserting said car through an aperture in said brace memberadjacent the inner surface of-one face thereof, and bending the end ofsaid car so that it will lie adjacent the outer surface of said face.

3. A hose clamp comprising a binding band adapted to encircle a hose, atightening device passi through a perforation in one end of the'band andthrough a brace member secured to the band near the op osite end thereofby means of a compr loop formed in the band and inserted through thebrace member and bent around a rtion thereof, the end of said bandextend ng be- Zond said loop serving as a guard piece, said race memberhaving feet adapted to bear upon said guard piece and how so positlonedas to convert a ortion of t e tangential clamping force 0 the bolt intoradial pressure exerted against the surface of the 15 hose.

4. A hose clamp comprising a flexible clamping band having an elongatedclosed slot therein, a brace member and a clamping bolt, the bracemember being attached to the clamping band by forming a loop in theportion of said hand containing said slot, compress the sides of thisloop together to form it mto an ear with an open slot, insorting saidear through an aperture in said brace member adjacent the inner surfaceof, one face thereof, and bending the end of said ear so that it will beadjacent the outer surface of said face and present an Egan slot for thereception of the clamping In testimony ature.

whereof I aflix 536% AN BERNARD 4 requiruig correction as fqllowsz' age2;]ine 113-,

Certiflcat of Correction;

itjsgharabti o'ertifibdjhat in Leflara PatnLNo. 1 417,071,, todiDeoember11, 1923, upon 0 application of'Barnard Moi-gin,- of Keene, awHump-shire, for anvimprovemgnt 1n 5 Hose Clam s,j an em;- 'ap rs in-therintad specification Km 1 aftr the word thereof i timed-the words 'muiaguard cc extending fem the'saiki Letters Pmnt should fead with tnisoomctlon'therein that the same In gonforiug b61110 reoordoflzhe casein'the ifant Ofice.

find hpalqd tl iiq 22d day ofJinua A, 1)., 1924. 1 1-11 Fnm ma,

AM? ammm rm.

by of mu loop; md that

